*{
	padding: 0;
	margin: 0;
}
.box{
	width: 512px;
	height: 768px;
	margin: auto;
	overflow: hidden;
	position: relative;
}
.bg1{
	width: 512px;
	height: 768px;
	background-image: url(bg1.png);
	position: absolute;
}
.bg2{
	width: 512px;
	height: 768px;
	background-image: url(bg1.png);
	position: absolute;
	top: -768px;
}
.plane{
	width: 89.6px;
	height: 66.4px;
	background-image: url(plane.png);
	position: absolute;
	background-size: 89.6px,66.4px;
	bottom: 50px;
	left:211.2px
}
.shoot{
	width: 7px;
	height: 16px;
	background-image: url(shoot.png);
	background-size: 7px,16px;
	position: absolute;
}
.bad{
	width: 89.6px;
	height: 66.4px;
	background-image: url(bad1.png);
	position: absolute;
	background-size: 89.6px,66.4px;
	bottom: 50px;
	left:211.2px
}
